CN109794590A - A kind of device and method of local ultrasound semi-solid state assistant Dual squeeze casting casting - Google Patents
A kind of device and method of local ultrasound semi-solid state assistant Dual squeeze casting casting Download PDFInfo
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- CN109794590A CN109794590A CN201811463079.6A CN201811463079A CN109794590A CN 109794590 A CN109794590 A CN 109794590A CN 201811463079 A CN201811463079 A CN 201811463079A CN 109794590 A CN109794590 A CN 109794590A
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- 230000009977 dual effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004512 die casting Methods 0.000 claims abstract description 53
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Abstract
The present invention provides a kind of device and method of local ultrasound semi-solid state assistant Dual squeeze casting casting, which includes die casting machine, die casting, ultrasonic vibration system, hydraulic system and pressing mechanism；The die casting machine is mounted on die casting, and is connected with cast gate on the cover half of die casting；The ultrasonic vibration system is mounted at the more demanding thin-walled of mechanical castings on the dynamic model of die casting；The pressing mechanism is mounted at the more demanding bottom of mechanical castings on the cover half of die casting；The hydraulic system is mounted on the dynamic model of die casting, and is connected with ultrasonic vibration system and pressing mechanism.Ultrasonic system and hydraulic system be combined with each other by the present invention, realize Dual squeeze casting, so that metal inside quality significantly improves, shrinkage porosite, shrinkage cavity obviously disappear, and improve the quality of casting, reduce rejection rate.
Description
Technical field
It is dual crowded that the present invention relates to metal material semi-solid-state shaping fields more particularly to a kind of local ultrasound semi-solid state assistant
Press the device and method of casting.
Background technique
Due to the good characteristic of semi-solid squeeze casting part, so that semi-solid squeeze casting becomes fast-developing at present one
Kind new technology.The essential core of the technology is that solid-liquid mixed slurry or embryo material is made to obtain non-dendrite arm tissue, and solid phase must ball
Change and refinement, alloy structure generally comprise 10~100 μm of spherical brilliant, evolution spherocrystal or equiax crystal, to show very
Small flow resistance and good forming property, however current semi-solid squeeze casting technology remains unchanged, there is many to lack
It falls into.
Patent publication No. is CN106424630A, which applies ultrasonic wave by ultrasonic system on die casting,
It is handled by injection component injection is intracavitary, since metal semi-solid is to be squeezed into mold from bottom to top, therefore exist
Fill type it is imperfect caused by shrinkage cavity shrinkage porosity the defects of；On mold, caused vibration very little reaches refinement crystal grain for ultrasound load
Functioning efficiency it is not high；The patent goes to consider in terms of refining crystal grain, and in view of to the semisolid after refinement crystal grain into
Row squeezes, to strengthen intricate casting part key position.
Patent publication No. is CN104439204A, and pedestal of the patent by ultrasonic system in die casting applies ultrasound
Mechanical oscillation are changed into the bottom plate that stable ultrasonic activation acts on permanent mold casting molding machine using amplitude transformer by wave,
Preheated metallic pattern is gone to have using the heat that ultrasonic wave generates, temperature sensor is by the temperature of the bottom plate of permanent mold casting molding machine
Degree passes central processing unit back, central processing unit by according to the signal received, the frequency and amplitude for controlling ultrasonic wave go preferably into
Row metal mold casting, but ultrasound load, on thick and heavy bottom plate, caused vibration very little reaches the inefficient of refinement crystal grain；
It is poured in metal type dies using liquid metals, splash, turbulent flow and volume gas etc. may be generated when due to vibration shaping and is asked
The defects of inscribing and bringing tissue looseness, shrinkage cavity and porosity.
Patent publication No. is CN106077558A, which first by preheated small blocks melting, obtains liquid aluminium alloy,
Liquid aluminium alloy is injected into attemperator by the cast gate with bending channel or inverted-cone shape channel to keep the temperature, obtains half
Solid metallic, then semi-solid-state metal is poured into the mold of heat preservation, extrusion forming is carried out, continues to press after the completion of squeezing, later
Eject casting.The invention is during semi-solid-state metal injects mold, it is understood that there may be contracting caused by semisolid prematurely solidifies
Hole, shrinkage defect；The invention can only the simple casting of some moulding of die casting, cannot better die casting some intricate castings.
In view of this, it would be highly desirable to which R & D design goes out a kind of casting device that can solve the above problem and method.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of local ultrasound semi-solid state assistant Dual squeeze casting casting
Device and method mentioned its object is to improve rheological property of semi-solid metal to improve the mold-filling capacity of semi-solid-state metal
The consistency of high casting further improves the mechanical property of casting.
To achieve the above object, in a first aspect, the present invention provides a kind of local ultrasound semi-solid state assistant Double Pressures
The device of casting.The device includes die casting machine, die casting, ultrasonic vibration system, hydraulic system and pressing mechanism；
The die casting machine is mounted on die casting, and is connected with cast gate on the cover half of die casting, to by semisolid
In extruding metal progressive die tool；
The ultrasonic vibration system is mounted at the more demanding thin-walled of mechanical castings on the dynamic model of die casting,
Semi-solid-state metal crystal grain at the position is refined with ultrasonic wave added to squeeze, increases the mechanical property of casting；
The pressing mechanism is mounted at the more demanding bottom of mechanical castings on the cover half of die casting, to squeeze
Semi-solid-state metal crystal grain at the position is pressed, the mechanical property of casting is increased；
The hydraulic system is mounted on the dynamic model of die casting, and is connected with ultrasonic vibration system and pressing mechanism,
To drive ultrasonic vibration system and pressing mechanism to squeeze semi-solid-state metal.
Further, the ultrasonic vibration system includes supersonic generator, ultrasonic transducer, amplitude transformer and ultrasound
Wave fixture, the supersonic generator are arranged in dynamic model outer side edges, are connected with the ultrasonic transducer, the ultrasonic wave transducer
Device, amplitude transformer and ultrasonic fixture are arranged in the T-type hole in dynamic model, and the ultrasonic transducer is connected with the amplitude transformer,
The two is fixed on ultrasonic fixture, and ultrasonic fixture is connected with hydraulic system, and amplitude transformer acts on dynamic model upper sleeve gasket to squeeze
The crystal grain of semi-solid-state metal at pressure and the ultrasonic wave added refinement higher thin-walled of mechanical property requirements.
Further, the pressing mechanism includes the first stringer board, the second stringer board, the first transverse slat, the second transverse slat and push rod, institute
It states the first stringer board and the second stringer board is bolted to connection, first transverse slat passes through logical above the first stringer board and the second stringer board
It crosses bolt to be fixed on cover half, second transverse slat passes through and is bolted on cover half below the first stringer board and the second stringer board
On, oil groove up and down is provided on first stringer board, oil groove lower end is threadedly coupled with oil inlet pipe, oil groove upper end and flowline
Be threadedly coupled, described push rod one end is arranged in oil groove, and the end push rod end tilts downwards, the other end pass through the second stringer board and
Cover half acts on the crystal grain of the semi-solid-state metal of the higher base position of mechanical property requirements, the oil inlet pipe and flowline respectively with
The oil outlet of hydraulic system is connected with oil return opening.
Further, the die casting includes dynamic model, cover half, pedestal and support block, and the dynamic model and cover half bottom side are installed
On pedestal, the dynamic model and cover half side are fixed in same level by support block.
Further, the support block is equipped with cover half threaded hole and dynamic model threaded hole, and cover half and support block pass through cover half spiral shell
Bolt passes through cover half threaded hole and fixes, and dynamic model passes through dynamic model threaded hole by dynamic model bolt with support block and fixes.
Further, the dynamic model includes that dynamic model mold core and dynamic model are framed, and it is framed that the dynamic model mold core is embedded in dynamic model
It is interior, type core is equipped in dynamic model mold core.
Further, the cover half includes that cover half mold core and cover half are framed, and the cover half is framed to be passed through with cover half mold core
Bolt is fixedly connected, and type core is equipped in the cover half mold core.
In second aspect, the present invention also provides carry out the casting of local ultrasound semi-solid state assistant Double Pressures by above-mentioned apparatus
The method for making casting, includes the following steps:
1) die casting is carried out being preheated to 150~250 DEG C, sprays release agent in mold, is then molded；
2) semi-solid-state metal prepared is injected in die casting machine, with than pressure 120MPa by semi-solid metal extrusion into die casting
Extrusion casint is carried out in mold；
3) when semi-solid-state metal fills at the type thin-walled more demanding to mechanical castings, start ultrasonic vibration system
And hydraulic system, the amplitude transformer of ultrasonic vibration system drive ultrasonic fixture with band while vibration, and by hydraulic system
Semi-solid-state metal crystal grain at the dynamic higher thin-walled of amplitude transformer squeeze casting mechanical property requirements；
4) after the completion of die casting, it is again started up hydraulic system, the ultrasonic fixture being respectively acting in ultrasonic system, band
The dynamic amplitude transformer semi-solid-state metal crystal grain at the higher thin-walled of squeeze casting mechanical property requirements again；And drive pressing mechanism
The higher base position of push rod squeeze casting mechanical property requirements semi-solid-state metal crystal grain；
5) ultrasonic vibration system, hydraulic system are closed, die casting is opened, takes out casting, carries out the extruding casting of next time
It makes.
Further, 2000~3000W of power that ultrasonic vibration system is vibrated in the step 3), frequency 15~
25KHZ, 5~15 μm of amplitude.
Further, hydraulic system ftercompction pressure is 135MPa, 26~28S of pressurization delay in the step 4).
Beneficial effects of the present invention:
1, present invention introduces local ultrasound vibrations, the mechanical property requirements higher position of casting are applied to, so that aluminium alloy
The dendritic arm of semisolid is broken from parent crystal, forms new core, to refine crystal grain, is improved casting compactness, in addition also be can be improved
The fluid ability and mold-filling capacity of semi-solid-state metal.
2, it introduces hydraulic system and carries out extrusion casint, when semi-solid-state metal fills type to more demanding thin of mechanical castings
When wall, after ultrasonic vibration system is opened, hydraulic system is opened, hydraulic system acts on the ultrasonic wave folder of ultrasonic vibration system
Tool, ultrasonic fixture drives amplitude transformer to be extruded on dynamic model sealing shroud, so that assisting ultrasonic system carries out refinement crystal grain；Work as casting
After the completion, it is again turned on hydraulic system to be squeezed, hydraulic system is respectively acting on the ultrasonic fixture of ultrasonic system and squeezes
The push rod of press mechanism, the thin-walled position more demanding to mechanical castings carries out Fine by Ultrasonic crystal grain and extruding and right respectively
Casting bottom position is squeezed, so that cast-internal dense structure, has better mechanical property, by ultrasonic system and hydraulic
System be combined with each other, and realizes Dual squeeze casting, so that metal inside quality significantly improves, shrinkage porosite, shrinkage cavity obviously disappear, and mentions
The high quality of casting, reduces rejection rate.
Detailed description of the invention
Fig. 1 is a kind of device knot of local ultrasound semi-solid state assistant Dual squeeze casting casting provided in an embodiment of the present invention
Structure schematic diagram；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting provided in an embodiment of the present invention
The structural schematic diagram of support block；
Fig. 4 is a kind of the first vertical of local ultrasound semi-solid state assistant Dual squeeze casting casting provided in an embodiment of the present invention
The structural schematic diagram of plate.
Specific embodiment
In order to make those skilled in the art better understand the technical solution in the embodiment of the present invention, and make of the invention real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, below by drawings and examples, to technology of the invention
Scheme is described in further detail.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of all other embodiment obtained, shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, a kind of local ultrasound semi-solid state assistant Dual squeeze casting casting provided in an embodiment of the present invention
The device of part is mainly used to cast the casting of complex thin-wall class, and the casting device in the embodiment of the present invention is for casting vehicle
Gear box, including die casting machine 1, die casting 2, ultrasonic vibration system 3, hydraulic system 4 and pressing mechanism 5.Die casting machine 1 is pacified
On die casting 2, the injection chamber 11 of die casting machine 1 is connected with 2 cover half cast gate of die casting, to by semi-solid metal extrusion
Into in die casting 2, the semi-solid-state metal in injection chamber 11 is squeezed into injection mold 2 by injection rod 12.Ultrasonic activation system
System 3 is mounted at the thin-walled that mechanical castings are more demanding on the dynamic model of die casting 2, which is among Fig. 1 medium casting
The thin part of wall refines semi-solid-state metal crystal grain at the position to ultrasonic wave added, increases the mechanical property of casting.Pressing mechanism
5 are mounted at the more demanding bottom of mechanical castings on the cover half of die casting, to squeeze semisolid gold at the position
Belong to crystal grain, increases the mechanical property of casting.Hydraulic system 4 is mounted on the dynamic model of die casting 2, and and ultrasonic vibration system
3 are connected with pressing mechanism 5, to drive ultrasonic vibration system 3 and pressing mechanism 5 to squeeze semi-solid-state metal.
As depicted in figs. 1 and 2, the die casting 2 includes dynamic model 21, cover half 22, pedestal 23 and support block 24, and dynamic model 21 wraps
Dynamic model framed 21.1 and dynamic model mold core 21.2 are included, dynamic model mold core 21.2 is embedded in dynamic model framed 21.1, in dynamic model mold core 21.2
Equipped with type core 25, card slot is equipped in dynamic model mold core 21.2,25 end of type core and card slot are clamped.Cover half 22 includes cover half framed 22.1
With cover half mold core 22.2, cover half framed 22.1 is bolted to connection with cover half mold core 22.2, is equipped in cover half mold core 22.2
Type core 25, cover half mold core 22.2 is interior to be equipped with card slot, and 25 end of type core and card slot are clamped.Support block 24 is equipped with cover half threaded hole 24.1
With dynamic model threaded hole 24.2 (as shown in Figure 3), cover half framed 22.1 and support block 24 pass through cover half bolt and pass through cover half threaded hole
24.1 is fixed, and dynamic model framed 21.1 and support block 24 are fixed across dynamic model threaded hole 24.2 by dynamic model bolt.It can by support block 24
The side of realization dynamic model 21 and cover half 22 is in same level.Dynamic model framed 21.1 and framed 22.1 bottom side of cover half are mounted on pedestal
On 23, the bottom surface of realization dynamic model 21 and cover half 22 is in same level.
As shown in Figure 1, the ultrasonic vibration system 3 of the embodiment of the present invention includes supersonic generator 31, ultrasonic wave transducer
Device 32, amplitude transformer 33 and ultrasonic fixture 34, supersonic generator 31 are arranged in framed 21.1 outer side edges of dynamic model, with ultrasonic waves
Energy device 32 is connected, and ultrasonic transducer 32, amplitude transformer 33 and ultrasonic fixture 34 are arranged in the T-type hole in dynamic model 21, ultrasound
Wave transducer 32 is connected with amplitude transformer 33, and the two is fixed on ultrasonic fixture 34, ultrasonic fixture 34 and 4 phase of hydraulic system
Even, amplitude transformer 33 acts on 21.2 upper sleeve gasket 21.4 of dynamic model mold core.Amplitude transformer 33 can be in supersonic generator 31 and ultrasonic wave
Energy converter 32 drives lower high-frequency vibration, refines the crystal grain of the semi-solid-state metal of thin-walled, and can further be assisted by hydraulic system 4
Ultrasonic vibration system drives ultrasonic fixture 34 to move in dynamic model T-type hole, so that amplitude transformer be driven to squeeze sealing back and forth
Set squeezes sealing shroud 21.4 when amplitude transformer vibration again, can further improve the mechanical property of casting.
As shown in Figure 1 and Figure 4, the pressing mechanism 5 of the embodiment of the present invention includes the first stringer board 51, the second stringer board 52, first
Transverse slat 53, the second transverse slat 54 and push rod 55.First stringer board 51 and the second stringer board 52 are bolted to connection, and the first transverse slat 53 is worn
It crosses the first stringer board 51 and 52 top of the second stringer board and is bolted on cover half 22.Second transverse slat 54 passes through the first stringer board 51
With the lower section of the second stringer board 52 and be bolted on cover half 22.51 are provided with oil groove 51.1 up and down on first stringer board,
51.1 lower end of oil groove is threadedly coupled with oil inlet pipe 41, and 51.1 upper end of oil groove is threadedly coupled with flowline 42, the setting of 55 one end of push rod
In oil groove 51.1, and the end push rod end tilts downwards, and the other end passes through the second stringer board 52 and cover half 22 acts on casting power
Learn the crystal grain of the semi-solid-state metal of the higher base position of performance requirement.Oil inlet pipe 41 and flowline 42 respectively with hydraulic system 4
Oil outlet is connected with oil return opening.
Hydraulic system 4 acts on the ultrasonic fixture 34 and pressing mechanism 5 of ultrasonic system, and hydraulic system 4 can drive super
Sound wave fixture 34 acts, and then drives 33 movable extrusion mold mold core of amplitude transformer, 21.2 upper sleeve gasket 26, thin to be pressed further by casting
Semi-solid-state metal crystal grain at wall, to increase the mechanical property at this.Meanwhile hydraulic system 4 can also drive pushing away for pressing mechanism 5
Bar 55 acts, specifically: hydraulic oil comes out from the oil outlet of hydraulic system 4 enters petroleum pipeline 57, and petroleum pipeline 57 is defeated by hydraulic oil
It send to oil groove 56, hydraulic pressure oil overhold to the inclined-plane of push rod 55, the higher pedestal of squeeze casting mechanical property requirements to the right of push rod 55
The crystal grain of the semi-solid-state metal at place, to enhance the mechanical property of the position casting.It is acted on by hydraulic system 4 and ultrasonic system
Ultrasonic fixture 34 and pressing mechanism 5 realize the Double Pressures of casting, then pass through the ultrasonic vibration of ultrasonic system 3 itself
Micronized particles, so that the Internal Quality of Cast cast out significantly improves, shrinkage porosite, shrinkage cavity obviously disappear, and improve the quality of casting,
Reduce rejection rate.
The embodiment of the invention also provides a kind of method of local ultrasound semi-solid state assistant Dual squeeze casting casting, the party
Method carries out the casting of casting using the device as described in Fig. 1 to 4, includes the following steps:
In step 401, die casting carrying out being preheated to 150~250 DEG C, semi-solid-state metal elongation is higher at this time,
It avoids embryo material from not filling type just to have solidified, release agent is sprayed in mold, is then molded.
In step 402, the injection of the semi-solid-state metal prepared injection die casting machine is intracavitary, injection rod is than pressure
120MPa will carry out extrusion casint in semi-solid metal extrusion progressive die tool.
In step 403, when semi-solid-state metal fills type to the more demanding thin-walled position of mechanical castings, starting is super
Acoustic vibration system, 2000~3000W of power, the 15~25KHZ of frequency of ultrasonic vibration system vibration, 5~15 μm of amplitude.?
Under this kind of technological parameter, the stress that ultrasonic wave generates is greater than the shearing strength of semi-solid-state metal dendritic arm, so that dendritic arm
It is broken from parent crystal, forms new core, during this, opened simultaneously hydraulic system and carry out local extruding, pressure at this time will have
There is filling function and the eutectic composition of poor fluidity is pressed by force among the dendrite skeleton that will be solidified, to reach auxiliary
Ultrasonic system refines crystal grain, reduces local key position shrinkage cavity shrinkage porosity, improves the quality of casting.
In step 404, after the completion of injection, hydraulic system starting, ftercompction pressure is 135MPa, delay 26 of pressurizeing~
28S, hydraulic system are respectively acting on the ultrasonic fixture of ultrasonic vibration system and the push rod of pressing mechanism.Join in such technique
Under said conditions, the local internal soundness that pressurized function makes casting part crucial significantly improved, cast-internal dense structure,
With better mechanical property, shrinkage porosite, shrinkage cavity disappear therewith, and the pressure extending time is too short, and the solid rate of semisolid is too low, it is difficult to
Sufficiently broken arborescent structure, is not achieved the effect of pressurization feeding；The solid rate of pressure extending overlong time, semisolid is too high, adds
It goes to fill without excessive semisolid when pressure, so as to cause the defect of shrinkage cavity shrinkage porosity.
In step 405, ultrasonic system, hydraulic system are closed, mold is opened, takes out casting, carries out the extruding casting of next time
It makes.
To sum up, present invention introduces local ultrasound vibrations, are applied to the mechanical property requirements higher position of casting, so that aluminium closes
The dendritic arm of golden semisolid is broken from parent crystal, forms new core, to refine crystal grain, is improved casting compactness, in addition can also be mentioned
The fluid ability and mold-filling capacity of high semi-solid-state metal.It introduces hydraulic system and carries out extrusion casint, arrived when semi-solid-state metal fills type
When the more demanding thin-walled of mechanical castings, after ultrasonic vibration system is opened, hydraulic system is opened, hydraulic system acts on
The ultrasonic fixture of ultrasonic vibration system, ultrasonic fixture drive amplitude transformer to be extruded on dynamic model sealing shroud, so that auxiliary is super
Sound system carries out refinement crystal grain；After the completion of casting, it is again turned on hydraulic system and is squeezed, hydraulic system is respectively acting on super
The ultrasonic fixture of acoustic systems and the push rod of pressing mechanism, the thin-walled position more demanding to mechanical castings carries out respectively
Fine by Ultrasonic crystal grain and extruding, and casting bottom position is squeezed, so that cast-internal dense structure, has better power
Performance is learned, ultrasonic system and hydraulic system are be combined with each other, Dual squeeze casting is realized, so that metal inside quality obviously mentions
Height, shrinkage porosite, shrinkage cavity obviously disappear, and improve the quality of casting, reduce rejection rate.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting, which is characterized in that including die casting machine, die casting
Mold, ultrasonic vibration system, hydraulic system and pressing mechanism；
The die casting machine is mounted on die casting, and is connected with cast gate on the cover half of die casting, to by semi-solid-state metal
It squeezes into mold；
The ultrasonic vibration system is mounted at the more demanding thin-walled of mechanical castings on the dynamic model of die casting, to
It squeezes and ultrasonic wave added refines semi-solid-state metal crystal grain at the position, increase the mechanical property of casting；
The pressing mechanism is mounted at the more demanding bottom of mechanical castings on the cover half of die casting, to squeeze this
Semi-solid-state metal crystal grain at position increases the mechanical property of casting；
The hydraulic system is mounted on the dynamic model of die casting, and is connected with ultrasonic vibration system and pressing mechanism, to
Ultrasonic vibration system and pressing mechanism is driven to squeeze semi-solid-state metal.
2. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 1, feature
It is, the ultrasonic vibration system includes supersonic generator, ultrasonic transducer, amplitude transformer and ultrasonic fixture, described
Supersonic generator be arranged in dynamic model outer side edges, be connected with the ultrasonic transducer, the ultrasonic transducer, amplitude transformer and
Ultrasonic fixture is arranged in the T-type hole in dynamic model, and the ultrasonic transducer is connected with the amplitude transformer, and the two is fixed on super
On sound wave fixture, ultrasonic fixture is connected with hydraulic system, and amplitude transformer acts on dynamic model upper sleeve gasket to squeeze and ultrasonic wave added
Refine the crystal grain of the semi-solid-state metal at the higher thin-walled of mechanical property requirements.
3. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 1, feature
Be, the pressing mechanism include the first stringer board, the second stringer board, the first transverse slat, the second transverse slat and push rod, first stringer board and
Second stringer board is bolted to connection, and first transverse slat passes through to be bolted on above the first stringer board and the second stringer board
On cover half, second transverse slat passes through to be bolted on cover half below the first stringer board and the second stringer board, and described first is vertical
Oil groove up and down is provided on plate, oil groove lower end is threadedly coupled with oil inlet pipe, and oil groove upper end is threadedly coupled with flowline, described
Push rod one end is arranged in oil groove, and the end push rod end tilts downwards, and the other end passes through the second stringer board and cover half acts on power
Learn the crystal grain of the semi-solid-state metal at the higher bottom of performance requirement, the oil inlet pipe and flowline go out with hydraulic system respectively
Hydraulic fluid port is connected with oil return opening.
4. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 1, feature
It is, the die casting includes dynamic model, cover half, pedestal and support block, and the dynamic model and cover half bottom side are mounted on the base, described
Dynamic model and cover half side are fixed in same level by support block.
5. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 4, feature
It is, the support block is equipped with cover half threaded hole and dynamic model threaded hole, and cover half and support block pass through cover half bolt and pass through cover half screw thread
Hole is fixed, and dynamic model passes through dynamic model threaded hole by dynamic model bolt with support block and fixes.
6. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 4, feature
Be, the dynamic model includes that dynamic model mold core and dynamic model are framed, the dynamic model mold core be embedded in dynamic model it is framed in, set in dynamic model mold core
There is type core.
7. a kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 4, feature
It is, the cover half includes that cover half mold core and cover half are framed, and the cover half is framed to be bolted to connection with cover half mold core, institute
It states and is equipped with type core in cover half mold core.
8. a kind of method of local ultrasound semi-solid state assistant Dual squeeze casting casting, which is characterized in that using such as claim 1
To 7 one of any described devices, include the following steps:
1) die casting is carried out being preheated to 150~250 DEG C, sprays release agent in mold, is then molded；
2) semi-solid-state metal prepared is injected in die casting machine, with than pressure 120MPa by semi-solid metal extrusion into die casting
Middle carry out extrusion casint；
3) when semi-solid-state metal fills at the type thin-walled more demanding to mechanical castings, start ultrasonic vibration system and liquid
Pressure system, the amplitude transformer of ultrasonic vibration system drive ultrasonic fixture to become to drive while vibration, and by hydraulic system
Semi-solid-state metal crystal grain at the higher thin-walled of width bar squeeze casting mechanical property requirements；
4) after the completion of die casting, it is again started up hydraulic system, the ultrasonic fixture being respectively acting in ultrasonic system drives and becomes
The width bar semi-solid-state metal crystal grain at the higher thin-walled of squeeze casting mechanical property requirements again；And drive pushing away for pressing mechanism
The semi-solid-state metal crystal grain of the higher base position of bar squeeze casting mechanical property requirements；
5) ultrasonic vibration system, hydraulic system are closed, die casting is opened, takes out casting, carries out the extrusion casint of next time.
9. a kind of method of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 8, feature
It is, the 2000~3000W of power, 15~25KHZ of frequency, 5~15 μ of amplitude that ultrasonic vibration system is vibrated in the step 3)
m。
10. a kind of method of local ultrasound semi-solid state assistant Dual squeeze casting casting according to claim 8, feature
It is, hydraulic system ftercompction pressure is 135MPa, 26~28S of pressurization delay in the step 4).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523952A (en) * | 2019-10-15 | 2019-12-03 | 广东铭利达科技有限公司 | A kind of local thin wall part die casting and die-casting process |
| CN114406237A (en) * | 2021-12-23 | 2022-04-29 | 龙岩市壹荣铸造有限公司 | Container corner fitting metal mold and pouring process thereof |
| CN114700477A (en) * | 2022-02-25 | 2022-07-05 | 东风汽车集团股份有限公司 | High-pressure casting local extrusion control method, device, equipment and medium |
| CN118832133A (en) * | 2024-09-20 | 2024-10-25 | 广州众山紧固件有限公司 | Heat treatment method of semi-solid casting |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57202940A (en) * | 1981-05-21 | 1982-12-13 | Alusuisse | Die with heat insulating protective film and method of coating its working surface |
| EP1048743A1 (en) * | 1999-04-30 | 2000-11-02 | General Motors Corporation | Creep-resistant magnesium alloy die castings |
| JP2011200882A (en) * | 2010-03-24 | 2011-10-13 | Jatco Ltd | Casting apparatus and casting method |
| JP2014034040A (en) * | 2012-08-07 | 2014-02-24 | Toyota Motor Corp | Casting method |
| CN105817603A (en) * | 2016-04-26 | 2016-08-03 | 安徽纯启动力机械有限公司 | Shrinkage-prevention die casting die |
| CN106424630A (en) * | 2016-08-19 | 2017-02-22 | 浙江大学 | Ultrasound-assisted semisolid die-casting molding device and method for complex thin-wall aluminum alloy pieces |
| CN106955985A (en) * | 2017-04-18 | 2017-07-18 | 中北大学 | A kind of secondary Compound Extrusion casting method of aluminium alloy semi-solid |
| CN209288228U (en) * | 2018-12-03 | 2019-08-23 | 南京江淳机电装备科技有限公司 | A kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting |
-
2018
- 2018-12-03 CN CN201811463079.6A patent/CN109794590B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57202940A (en) * | 1981-05-21 | 1982-12-13 | Alusuisse | Die with heat insulating protective film and method of coating its working surface |
| EP1048743A1 (en) * | 1999-04-30 | 2000-11-02 | General Motors Corporation | Creep-resistant magnesium alloy die castings |
| JP2011200882A (en) * | 2010-03-24 | 2011-10-13 | Jatco Ltd | Casting apparatus and casting method |
| JP2014034040A (en) * | 2012-08-07 | 2014-02-24 | Toyota Motor Corp | Casting method |
| CN105817603A (en) * | 2016-04-26 | 2016-08-03 | 安徽纯启动力机械有限公司 | Shrinkage-prevention die casting die |
| CN106424630A (en) * | 2016-08-19 | 2017-02-22 | 浙江大学 | Ultrasound-assisted semisolid die-casting molding device and method for complex thin-wall aluminum alloy pieces |
| CN106955985A (en) * | 2017-04-18 | 2017-07-18 | 中北大学 | A kind of secondary Compound Extrusion casting method of aluminium alloy semi-solid |
| CN209288228U (en) * | 2018-12-03 | 2019-08-23 | 南京江淳机电装备科技有限公司 | A kind of device of local ultrasound semi-solid state assistant Dual squeeze casting casting |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523952A (en) * | 2019-10-15 | 2019-12-03 | 广东铭利达科技有限公司 | A kind of local thin wall part die casting and die-casting process |
| CN114406237A (en) * | 2021-12-23 | 2022-04-29 | 龙岩市壹荣铸造有限公司 | Container corner fitting metal mold and pouring process thereof |
| CN114700477A (en) * | 2022-02-25 | 2022-07-05 | 东风汽车集团股份有限公司 | High-pressure casting local extrusion control method, device, equipment and medium |
| CN114700477B (en) * | 2022-02-25 | 2023-07-25 | 东风汽车集团股份有限公司 | High-pressure casting local extrusion control method, device, equipment and medium |
| CN118832133A (en) * | 2024-09-20 | 2024-10-25 | 广州众山紧固件有限公司 | Heat treatment method of semi-solid casting |
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